A single drop of Immortal King essence blood meant one life. Yu Wudi gritted his teeth and refined four whole jars, nearly exhausting his vitality. Fortunately, a heaven-defying treasure like the Nine-Colored Immortal Pill could restore it; otherwise, he really would have ruined himself.
As the Quasi-Immortal Emperor formation approached completion, curiosity appeared on Yu Wudi's face. What could possibly demand such an enormous price and put two Quasi-Immortal Emperors on such high alert?
"Ancient history across a thousand ages, let the years appear anew!"
The White-Clothed Quasi-Immortal Emperor shouted, commanding the heavens. The myriad Dao moved with him, and the river of years roared, flowing in response to his will.
Emperors were supreme, and only a handful had existed throughout all history. To them, traversing time was like walking on level ground. No secret could escape a Quasi-Immortal Emperor.
Unless it involved causality on the same level.
The formation rumbled, ceaselessly flowing upstream as it divined the grand design of heaven and earth and traced the origins of Jiuyou Ao of the Ten Evils. It turned page after page of ancient history, from the Nine Heavens and Ten Earths to the Immortal Realm, from the Immortal Realm to the Sea of Realms, and from the Sea of Realms to the Ultimate Ancient Land, the Dark Domain.
Suddenly, the formation began to creak, as though it had encountered an obstacle.
Rather than anger, delight filled Lin Xian, for this proved that Yu Wudi's branch of the Ninefold Netherworld lineage truly was connected to a Dark Dao Ancestor.
The World-Ending Old Man indeed harbored sinister intentions and had left numerous fallback plans.
"Let me help you." Lin Xian stepped forward and joined forces with the White-Clothed Quasi-Immortal Emperor, breaking through that page of ancient history to trace the ultimate past.
Even